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When we enter a black elbow room, or when the sun goes down, the reverse happens. Because the light reaching our eye is too less for us to see well, the pupil dilates (becomes larger) to about 5-6mm. This also exposes the Rod cells red bull cap  of our retina to the light. The Rod cells help us to see in the dark.
Now, it is easy to imagine what happens when we put on a dark glass while going out in the sun. The dark lenses cut off the light entering our eye, and our pupil dilates as a result. As a result, more light enters the eye. Since the lenses are dark Oakley Sunglasses Sales , we do not feel any discomfort. But, there is a concern. The dark glasses do not block out the Ultraviolet Radiation (UV Rays) in the light.
UV Rays cause severe damage to our retina. They are known to cause macular degeneration, Macular Hole, Cataract, Pterygium (a growth on the eye),
Therefore, it is imperative that the dark glasses that we use should have a UV filtering capacity. If such a UV protection is not available on the dark glasses that you wear, it is better to go out into the sun without them than to wear them. In conclusion, it is ideal to wear a UV protective sunglass while out in the sun. A sunglass without UV protection must be avoided at all costs as that is more damaging to the eye.Both companies make sunglasses as well as nonprescription reading glasses. While StyleMark and FGX may not be household names, the brand names of their products are. StyleMark's shades brands admit 9 Cicily Isabel Fairfield, dockhands, Reebok, g'day Kitty and various Walter Elias Disney properties. FGX's denounces include Stephen Foster Grant Cheap New Era Caps Magnivision, Anarchy and Gargoyles. Essilor, which evolved FGX two years ago, primarily brings in and distributes prescription electron lens eyeglasses and adjoin lenses and constituted the beginning to create progressive lenses. Taylor said the one matter that will change immediately is the hallmark name, which leave be replaced. "The FGX name testament Hans Bethe continue name" for the  gucci sunglasses Ormond Beach sunglass/reading crank God Almighty, he said.